ShellCheck pre-commit hook

This is the official pre-commit hook for ShellCheck, the static analysis tool for shell scripts.

Activate by adding it to your .pre-commit-config.yaml:

repos:
- repo: https://github.com/koalaman/shellcheck-precommit
rev: v0.10.0
hooks:
- id: shellcheck
# args: ["--severity=warning"] # Optionally only show errors and warnings

Why a separate repo?

This repo keeps the pre-commit hook out of the critical path of ShellCheck releases, reducing the number of things that can go wrong. This in turn helps ensure a smoother pre-commit autoupdate.